Home River Bioblitz
From 25th to 27th of September 2026, people around the world will go out to explore their local rivers, hosting the seventh Home River Bioblitz. During its sixth edition, over 1.100 people collected biodiversity data around more than 70 rivers, using iNaturalist.
We invite you to organize your own local Home River Bioblitz. To help you do so, and to support you in communicating the story and results of your event to a wide audience, we will support you with various online workshops.
What is the Home River Bioblitz?
A bioblitz is a communal citizen-science effort to record a wide variety of species on a specific location within a certain timeframe. Bioblitzes are a way to connect people to their environments, zooming in to details they normally pass by and at the same time generating useful data for science and conservation.
The Home River Bioblitz focuses on the biodiversity in and around rivers, which are at the heart of all ecosystems. The event connects the stories of the people that protect, restore and celebrate these valuable places. Take a look at this video to learn more!
During the Home River Bioblitz, we go out to explore our local rivers together with peers, friends and family, thereby enlarging local networks of people who care about rivers. We identify the observed species with help of the global iNaturalist community. During an online recap session, we chat about the day with various specialists, zooming into some remarkable observations as well as discussing new ways to relate to our local river wildlife.
Be part of a Global community
Just as much as we care about the biodiversity you will encounter during your Home River Bioblitz, we care about the reasons that you go out there on this day. People around the world are standing up to protect and celebrate their local rivers. These stories should be told and through several workshops, we will create the space to do so.
Once you register, we invite you to a series of online sessions that help you make the most out of your event.
1. THRB and iNaturalist Online Training – September 1st
2. Storytelling Workshop – September 8th
3. Science Workshop – September 15th
4. THRB Online Recap Session – October 6th
You find more information in the guidelines at the bottom of this page. If you’d like to organise a bioblitz, please register in the next section.
*coming soon* Organise Your Home River Bioblitz
Do you live near a river and are you curious to know what species live there? Or do you have the impression that many people are unaware of its wildlife? We invite you to join us between September 25th and 27th, 2026 to explore the biodiversity around your local river. You can do this with your family members or invite a wider community, it’s up to you how big you make this!
By becoming a bioblitz organizer, you have the opportunity to take part in several workshops that help you in the organisation of your river event, and in the communication of the data collected and the story you’d like to tell. This is a great way to engage your peers, friends and family in the protection of your river, and connect to a global community that shares the love for rivers.
*coming soon* Guidelines The Home River Bioblitz
Below, you’ll find the information package to help you organize your Bioblitz. It includes an introduction to organizing your Home River Bioblitz, guidelines for iNaturalist and social media, and the schedule for all online workshops.
Become a Business Member
Through the Home River Bioblitz, we are building a global community of river lovers and defenders. But we cannot do this without support. Please consider partnering up with us, or do a one time donation.
Join The River Collective
Participate in a growing network of river lovers who seek to turn their knowledge into action.
